Automatic furnace-stoker.



G. A. KOHGUT.

AUT'OMATIC FURNACE STOKER.

APPLICATION msn rfa. 25. |915.

y Pawn f @im R6, E9n.'

3 SMETS-S'HEET i.

G. A. KOHOUT.

AUTOMATIC' FURNACE STOKER. APPucATloN minl rra. 25. me.

imma@ G. A. KoHouT. AUTOMATIC FURNACE STOKER.

APPLICATION FILED FEB. 25| I9I6.

Patented Oct, 16, 1917.

3 SHEETS-SHEET 3.

GEORGE A. KOHOUT, OF CHICAGO, ILLINOIS, ASSIGNOR TO KEBSTO CORPORATION, OF CHICAGO, ILLINOIS.

AUTOMATIC FUBNACE-STOKER.

Specification of Letters Patent.

Patented Oct. 16, 1917.

Application -led February 25, 1916'. Serial No. 80,858.

To all whom t may concern:

a citizen of the United States, residin at' Chicago, in the county of Cook and tate of Illinois, have invented a certain new and useful Improvement in Automatic Furnace- Stokers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to automatic furnace stokers and has for its object the provision of an improved device of this nature which is simple in construction and efficient in its operation.

My invention contemplates improved means for controlling the starting and stopping of the automatic Stoker including safety appliances for protecting the Stoker in the event of accident. My invention contemplates the use of a deflector plate which directs the fuel discharged into the furnace to its proper place, this deflector being preferably hollow so that it may be air or steam cooled, which air or steam may be used at the same time to assist nin cleaning the face of the deliector after each charge, or may be used to assist in throwing the fuel into position. My invention further contemplates means whereby the air or steam supply may be intermittent so intermittent steam jets along the face of the deector may be caused synchronously with each operation of the fuel throwing device.

I will explain one form which my invention may take illustrating the above features and others which will be apparent more in detail by referring to the accompanying drawings, in which- Figure 1 is a longitudinal sectional view of my improved Stoker as applied to a furnace Fig. 2,is a front view of the Stoker;

Fig. 3 is a side view of the Stoker;

Fig. 4 is a sectional view on line b-b of ig. 5 is a sectlonal v1ewon lme c-c of11`1g.2;- v Fig. 6 is a front view of the deflector; Fig. 7 is a top view of the'deiiector; Fig. 8 is 'a -v1ew of a modif form of deflector, and l.

Fig. 9 is a detail of construction. Referring more articularly to Fig. 1, I

show a furnacel` aving the grate bars 2,

the cleaning doors 3, and the firing doors 4, these firing doors 4 also being more clearly shown in Fig. 4 where they are shown as cut away to accommodate my improved automatic Stoker appliance. My improved automatic stoker is shown as applied to the front of the furnace and projects into the furnace through the cut away portions of the firing doors 4. My improved Stoker consists of the structure comprising the base plate 5 to which are attached the forwardly extending webs or ribs 6, which ribs form a compartment to protect certain gearing as will be apparent hereinafter. The base plate structure is also integral with a measuring chamber 7 and carries bearings 8 and 9 adapted to accommodate a shaft 10, which shaft carries the measuring device 11. This measuring device 11 has pockets 12 and 13 which are of unequal size so that different quantities of fuel are alternately deposited for discharge into the furnace, thus to secure even distribution throughout the entire 'grate surface. The integral structure including the tegral structure are mounted two cup-sha edl elements 20 and 21 which are bolted toget er and Secured on the top of this structure, .thereby to form a pocket or chamber 22 within which crushers 23 and 24 operate to crush the fuel deposited into the hopper 25 before it reaches the pockets 12 and 13. These crushers are mounted on shafts 26 and 27 respectively and the shaft 27 is provided with a sprocket wheel I28 driven by means of the chain29 from a sprocket wheel 30 carried by the main drive shaft 19. The shaft 27 also carries a gear wheel 31 which meshes with a Second gear wheel 32 provided upon the shaft' 26. Thus the Crushers are driven directly from the main power shaft 19 as Y readily apparent. The elements 20 and 21 are of course suitably. bolted to the base plate by means of the bolts 33, and the hopper 25 is suitably attached in any desirable manner. A door 34 preferably hinged closes .the chamber within' which the gear wheels 17 and 18 are` mounted. The shaft 19 is Jsuitably held in bearings 35 as seen most `c1early in Fi 2. This drive shaft 19 is driven from t e power .shaft 36 througlfthe `interposition of clutch elements 37 and 38,

the linger 39 of a control lever being indicated to` move the clutch element 38 to the right or left, thus to cause the pm 40 to engage the projection 41 to thereby drive ing framework consists also of the webs 50- the shaft 19. This pin A41 is of such characteristics that it will break and prevent furtherdriving of the shaft 19 should any part of the stoker mechanism become clogged beyond the limits of safety.y The vpower shaft 19 likewise carries a cam 42.

which is rotated therewith and which has pins 43 and 44 adapted to engage projections 45 and 46 respectivel of a sliding framework '47, which .sli ing framework has rollers 48 moving in guides 49 provided in the integral base plate structure. This slidand 51 on opposite sides thereof vwhich carry arms 52 and 53 that engage retractile springs plates 58 and 59 faced with/leather 60 which 54 'and 55. Tgis sliding framework alsohas the downwar ly extending lingers 56 and 57 extendeddownwardly lfrom the webs 51 and 52, these lingers carrying percussion are adapted to abut against the recoil springs 61, 62, 63 and 64.

It is to be understood of course thatl the` sliding framework 47 is moved to the left (Fig. 3) by the pins 43 and 44 and when the pin 44leaves the projection 46v this sliding framework due to the s rings 54 and 55v is thrown violently to the right, theisprings 61 to 64 inclusive then taking the recoil after the fuel has been discharged from in front of the piston 15 to prevent breakage' of the apparatus and to reduce the a noise. halves of the sliding framework are fastened to a rod 65 'which passes through the piston 15, this red being fastened Ito the sliding framework elements by the bolts 66 and 67.

The piston/I5l when it is moved to the left (Fig. 5), of course is moved far enough to the left so that it is at the left of the passageway 16 to permit fuelv from the pockets 12 rounded upper surface 70 and is providedy may pass out and flow in a line substantially' parallel to the .face of the deiector. This 65 or 13 to drop into the piston chamber 68 so ,that the piston upon its recoil may throw -the deposited fuel against the deflector 69 where it is deflected and distributed over th grate bars 2. Y

The outline of the defiector plate will b e more clearly apparent from an inspection of Figs. 5,6 and 7. This delector has the with a hollow interior-71 into which steam 'may be led by the pipe 72 which receives its steam from the supply pipe 73. The deiiector is also provided with nozzles 74, 75 ,through which steam from the chamber 71 steam may be used to clear the deflector after each discharge, or may be used even at the time that the fuel is being discharged.

Thesteam within the chamber 71 serves to keep the deflector at a reasonable temperature. The supply pipe 73 may receive its steam directly from the main supply pipe 76 through the by-pass 77 provided the valve A78 is open, at which time there is a continuous iow of steam. Should the valve 78 be closed,- however, then the steam would have to travel through the pipe 79 which is controlled by a valve 80, this valve 80 being controlled directly by a cam 81, which cam operates in response tothe movements of ,the

vpower shaft 19, as shown in Fig. 9. Prnefer-fo ably the valve 80 is then opened twice for each complete revolution of the 'operating shaft 19.

In Fig. 8, I show a modified form of structure for the deflector 69 in that in addition l`to the steam chamber 71 I provide a Water cooling chamber 82 to which water may be led to further cool the deiector as may be ydesired.

feeding fuel from said reservoir to said charge receptacle, means for discharging said fuel from said charge receptacle, a deflector in the path of the discharged fuel,

means for supplying steam associated with said two first aforesaid means, andmeans conjointly with said driveshaft to control said steam supply.

2. An automatic Stoker comprising a cen- .trally located casing, said casing having a feed controlling chamber and a discharge chamber, a ymeasuring device `rin said feed said deiector, a drive shaft for controlling Vcontrolling chamber, a piston in said disn charge chamber, asliding framework eX- teriorly of said casing aociated with said piston, a power shaft to Aactuate said measuring device and said framework, rollers carsaid casing within whichsaid rollers operate to permit of a reciprocatoryv movement of said framework, a retractile spring for restoringsaid framework, and a percussion spring to take the recoil as this framework is being restored to its initial position. I v

' ried by said framework, guides carried by 3. An automatic Stoker comprising a ceni' trally located casing, said casing having a feed controlling chamber and a 'discharge chamber, a measuring device in said feed controlling chamber, a piston in said dischargel chamber, a sliding' vframework exteriorly of said casing associated with said incense piston, a power shaft to actuate said measuring device and said framework, a cam interposed between said power shaft andv said framework, rollers carried by said framework, guides `carried by said casing within which said rollers operate to permit of a reciprocatory movement of said framework, a retractile spring for restoring said framework, and a percussion spring to take the recoil as this framework is being restored to its initial position.

a. An automatic Stoker comprising a centrally located casing, said casing having a feed controlling chamber and a discharge chamber, a measuring device in said feed controlling chamber, a piston in said discharge chamber, a sliding framework ein terioily of said casing associated with said piston, a power shaft to actuate said measuring device and said framework, a pair of pins on said framework, retractile springs associated with said pins, :and a recoil spring associated with said framework.

5. An automatic stoker comprising a centrally located casing, said casing having a feed controlling chamber and a discharge chamber, a measuring device in said feed controlling chamber, a piston in said discharge chamber, a sliding framework exte- 'riorly of said casing associated with said piston, a power shaft to actuate said measuring device and said framework, a cam interposed betweenv said power shaft and said framework, a pair of pins on said framework, retractile springs associated with said pins, and a recoil spring associated with said framework.

6. An automatic Stoker comprising a centrally located casing, said casing having a feed controlling chamber and a discharge chamber, a measuring device in said feed controlling chamber, a piston in said discharge chamber, a sliding framework exteriorly of said casing associated with said piston, a power shaft to actuate said measuring device and said framework, a pair of pins on said framework, retractile springs associated with said pins, percussion plates carried 1.oy said framework, and recoil springs cooperating with said percussion plates.

7. An automatic stoker comprising a centrally located casing, said casing having a feed controlling chamber and a discharge chamber, a measuring device in said feed controlling chamber, a piston in said discharge chamber, a sliding framework errteriorly of said casing associated with said piston, a power shaft to actnate measuring device and said framework, a

terposed between said power and said a pair of pins on said work, retractile springs asso iated with sad pins, percussion plates carried hy said framework, and recoil springs cooperating with said percussion plat-es..

8. lin automatic Stoker comprising cel trally located casing, said casing having a feed controlling chamber and a discharge chamber, a measuring device in said feed controlling chamber, a piston in said discharge chamber, a sliding framework eirteriorly of said casing and mounted thereon, adapted to reciprocate, a stem transversely of said framework carried with said piston, a power shaft to actuate said measuring device and said framework, a retractile spring associated with said stem, and a recoil spring coperating with said framework. v

ln witness whereof, l hereunto subscribe my name this 29th day of January, A. l).

GEORGE A. KOHOUT.

framework,

Witnesses:

Hazen A. Jones, A. LYDA JONES. 

